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arXiv 2006.09680astro-ph.HEgr-qchep-ph
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九个定域快速射电暴光子质量的联合极限

Combined Limit on the Photon Mass with Nine Localized Fast Radio Bursts

Jun-Jie Wei, Xue-Feng Wu

摘要:

光子的非零质量假设可以产生与频率相关的光的光的色散,这导致来自给定瞬态源的具有不同频率的光子的到达时间差。河外快速射电暴(FRB)具有低频发射、短持续时间和长传播距离的特点,是约束光子$m_γ$静止质量的优良天体物理探测器。然而,推导$m_γ$的极限是复杂的,从等离子体和非零光子质量效应预期的色散的类似的频率依赖性。如果有少量的FRB红移测量数据可用,等离子体和光子质量对色散测度(DM)的不同红移依赖性可能能够在测试光子质量时打破色散简并。到目前为止,已经报道了9个具有红移测量的FRB,这可以将这个想法变为现实。考虑到DM的贡献,从等离子体和一个可能的光子质量,我们使用的9个FRB的数据,以获得$m_γ\leq7.1\times10^{-51}\;{\rm kg}$的组合限制,或相当于$m_γ\leq4.0\times10^{-15}\; {\rm eV}/c^{2}$在68\%的置信水平,这基本上是一样好,或代表了7倍的改进,比以前的限制,由单一的FRB。此外,一个合理的估计DM的贡献,从宿主星系,$\rm DM_{host}$,可以同时实现在我们的分析。FRB本地化的快速进展将进一步收紧对$m_γ$和$\rm DM_{host}$的限制。

英文摘要:

A nonzero-mass hypothesis for the photon can produces a frequency-dependent dispersion of light, which results in arrival-time differences of photons with different frequencies originating from a given transient source. Extragalactic fast radio bursts (FRBs), with their low frequency emissions, short time durations, and long propagation distances, are excellent astrophysical probes to constrain the rest mass of the photon $m_γ$. However, the derivation of a limit on $m_γ$ is complicated by the similar frequency dependences of dispersion expected from the plasma and nonzero photon mass effects. If a handful measurements of redshift for FRBs are available, the different redshift dependences of the plasma and photon mass contributions to the dispersion measure (DM) might be able to break dispersion degeneracy in testing the photon mass. For now, nine FRBs with redshift measurements have been reported, which can turn this idea into reality. Taking into account the DM contributions from both the plasma and a possible photon mass, we use the data on the nine FRBs to derive a combined limit of $m_γ\leq7.1\times10^{-51}\;{\rm kg}$, or equivalently $m_γ\leq4.0\times10^{-15}\; {\rm eV}/c^{2}$ at 68\% confidence level, which is essentially as good as or represents a factor of 7 improvement over previous limits obtained by the single FRBs. Additionally, a reasonable estimation for the DM contribution from the host galaxy, $\rm DM_{host}$, can be simultaneously achieved in our analysis. The rapid progress in localizing FRBs will further tighten the constraints on both $m_γ$ and $\rm DM_{host}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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